#include <iostream>
#include <stack>
#include <cmath>
#include <algorithm>

using namespace std;

int main() {


    double a = std::pow(2, 3);
    cout << a << endl;
    cout << M_E << endl;
    cout << M_PI << endl;
    cout << std::exp(2) << endl;

    double b = max(2.0, 3.0);
    double c = min(3.9, 5.4);
    cout << b << " " << c << endl;


    return 0;
}